启动Dubbo服务的时候报错了Injection of @DubboReference dependencies is failed; nested exception is java.lang.IllegalStateException: zookeeper not connected
依赖：
<!-- 属性配置--> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <spring.boot.version>2.3.12.RELEASE</spring.boot.version> <dubbo.version>3.0.0</dubbo.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo</artifactId> <version>${dubbo.version}</version> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-dependencies-zookeeper</artifactId> <version>${dubbo.version}</version> <type>pom</type> </dependency> <!-- Spring Boot --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <version>RELEASE</version> <scope>compile</scope> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>${spring.boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.4</version> <configuration> <source>${java.version}</source> <target>${java.version}</target> <encoding>${project.build.sourceEncoding}</encoding> </configuration> </plugin> </plugins> <resources> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> <include>**/*.html</include> </includes> <filtering>true</filtering> </resource> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> </resources> </build>
配置：
server.port=8081 dubbo.application.name=application-name dubbo.registry.address=zookeeper://192.168.122.128:2181 dubbo.protocol.name=dubbo dubbo.protocol.port=-1 dubbo.registry.timeout=60000
启动类：
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @EnableDubbo public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }
消费端：
import com.example.dubbo.service.HelloService; import org.apache.dubbo.config.annotation.DubboReference; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloController { @DubboReference(check = false) private HelloService helloService; @GetMapping("/hello") public String sayHello(@RequestParam String name) { return helloService.sayHello(name); } }
提供者：
import com.example.dubbo.service.HelloService; import org.apache.dubbo.config.annotation.DubboService; @DubboService public class HelloServiceImpl implements HelloService { @Override public String sayHello(String name) { return "Hello, " + name + "!"; } }
解决办法其实就是@DubboService添加接口类即可，代码如下：
import com.example.dubbo.service.HelloService; import org.apache.dubbo.config.annotation.DubboService; @DubboService(interfaceClass = HelloService.class) public class HelloServiceImpl implements HelloService { @Override public String sayHello(String name) { return "Hello, " + name + "!"; } }
